Section-insulator.



N0. 7l6,978. Patented Den. 30, l902.

J. II. ANDERSEN.

SEOTION |NSULATOR.

2 Sheets-Sheet l.

(N0 Modul.)

N0. 716,978. Patenfed Beo. 30, l902. J. M. ANDERSEN.

SEGTION INSUL-ATOR.

(Applictxon filed Aug. 25, 1902.)

2 Sheets-Sheet 2.

(NOHodel.)

all:

JOl-IAN M. ANDERSEN, OF BOSTON, MASSAOHUSETTS, ASSIGNOR OF ONE- HALB T0 ALBERT ANDERSON, OF BOSTON, MASSACIIUSETTS.

SECTION-INSULATOR.

SPEOIEI'GATION forming pa.rt of Letters Patent N0. 716,978, dated December 30, 1902.

' Applioation filed August 25, 1902. Serial N0. 120,904. (N0 model.)

Be i known that I, JOHAN M. ANDERSEN, a citizen 0f the United Stanes, residing in Bos- Bon, in the eountyof Snifo1kand Sbate 0f Massaehusetts, have invented an1xnprovement in Seotion-Insulators, of whi0h the following deseription, in eonneetion with the aceompanying drawings, is a Specification, likeeharacters 0n the dmwings representing like parts.

This invention relates 130 an insulating-snpport for elecnrio condncnors, and more par- Lieularly f0i tl1e trolley-wire of an overhead eleetrie-railway system.

The invention has for its object 110 provide a simple a11d inexpensive yet highly-effieient; insulating-support 0f that cLss known es section-insulators, by mean s of wl1ieh the trolley-line is separated into sections whieh are insulated f10n1 one another.

One feature of the present invention cousists in a novel constructi0n 0f line-terminal whereby all the Terminals may be made 01 Gast from a Single pabtern and are therefore interehangeable, thereby materially redueing the cost in this respeet, and the said terminals are of such constrnction, es will be described, as to ena.lole them so be readily counected with and disconnected from the other parts of the support in a substantially shorl: sinne.

Another feabure eonsists in a novel 1nea.ns f01 seeuring the trolley-wire to the terminal, as Will be deseribed.

These and other features 0f this invention Will be pointed out; in the elaims ab the end 0f this specifieation.

Fignre 1 is a, perspeetive view 0f a, trolleyline secnion-insulator embodying this invention; Fig. 2, a. perspeeuive, 0n an enlarged scale, of 0ne of Ehe line-terminals; Fig. 3, a detail 110 be referred '00; Fig. 4, a detail in longitudinal sectioh 0f one of be line-terminals and a, portion of Ehe insulators; Fig. 5, an under side view of 1she section-insulator, one end being broken away; Fig. 6, a transverse section 0n the 1ine 6 6, Fig. 4; Fig. 7, a transverse section 011 the line 7 7, Fig. 4; Fig. 8, a transverse seetion on Lhe line 8 8, Fig. 4; and Fig. 9, a detail to be referred t0.

Referring to Fig. 1, a b represent Ehe lineterminals of a section-insulator embodying this invention, ehe said terminals being 0f like constrnetion, and therefore a detail deseription 0f one is deerned sufficient.

Referring to Figs. 2 and 4, Ehe line-terrninal a consists 0f a casting of brass 01' ot-her suitable metal er metals provided wibh abody portion 10, Whieh is snbstantially straight 011 its under surfaee and is provided at its forward end with an upwardly and rearwardly extended hollow porbion 12, into Which the end of the urolley-wire 13 is designed t0 be passed and whieh eontains a clampingdevice, herein shown as a finger 01 bar 14, (See Fig. 9,) whieh is preferably provided on its linder side Wih a, longitudinal groove 15, adapted 130 embrace the upper portion 0f the trolleywire, the seid clamping finger 01 bar being provided at1ihs rezuend wityh pivot-pins 16, adapted 130 engage suitable soekets forrned by t-he ears 18 on the rear of the hollow portion 12. The clamping finger or bar 14 is hold in firm engagement wibh the trolley-wire l3 byserews 19, hereinshown as three in number, Which extend throuQh suitable bosses 20, formed 0n Ehe upper surface 0f the hollow portion 0f the easting ancl engage the elamping-finger between its ends for a purpose as will be deseribed. The easting is provided with laterally-extended flanges 21, whieh are curved an their front and preferably at their rear ends, and Ehe seid flanges are reinforced by the een- 13ml web 22. The body portion of the easting has its upper faee 23 (see Fig. 2) made substantially straight, and the seid body portion at its rear end is provided wibh 0ne 01 more laterally-projeoting lugs 24 25, whieh are preferably separaned from eaeh oher by suitable spaees 26. The' laterally-projeetsing lugs 24 25 coperate wiuh and engage a casting 28, which may be termed a head-piece and which casting is provided ab its botton1 with inwardly-extended flanges 30, forming a sahstantially T-shaped slot, in the horizontal portion of whieh tahe lugs 24 25are adapbed 110 be moved longitudinally, the rear 01 body portion 10 0f the terminal being extended through the vertieal portion of bhe seid slot: and coufined against lateral movement by tl1e seid flanges 80, upon whioh the lugs 24 25 rest When the terminal is in its operative position. The fianges 30 are provided witah reeessed 01 notehed portions 31 (see Fig. 5) 0f a length substantially equalv 10 11he length of 11he lugs 24 and through whieh 11he lugs 24 are adapted 110 be passed when 11he line-t1ernninal is attz1ehed to er disconnec11ed f10111 the headpiece. When 11he lugs 24 are passed bhrough the notehes 31, the lugs 25 are carried up 2111 the rear 0f 11he b011110m p0111i011 of 11he bezwipiece, and when the lugs 24 have been inserted far enough 110 clear 11he upper surfaee 0f 11he flanges 30 11he terminal pieee is drawn forward and the lugs 24 25 are brough11 over and rest upon the flanges 30 0f 11he beendpiece. The forward m0vemen11 of the line- 11ernninal may be limibed by 11he end lugs er cross-bars 33, Whi0h are adapt1ed 110 engage the rear wall 01: the head-pieee, as represented in Figs. 1, 4, and 5. The line-tenninal b is a duplica.t1e 0f 11he line-11erminal a and is secured in a. similar manner 10 a duplicate head-piece 40, and the nw0 head-pieces are meehanieally connec11ed together, b1111 are elee1srically separated from one anoher, as Will now be deseribed. The head-piece 28 is provided w'111h a socket 41, in which is seeured, as by a 1101142, the end 0f the insulator 43, which may be 0f any usual 01 sui11able 0011s11r11011i0n and whieh has its onher end enlarged 110 form a head 44 and fitted. within a center pieee 45, which f01 simplici11y of consl1ruetion is made 0f duplica11e parts, whieh are fastened 11oge11her by suitable b0l11s 46 47. The 11w0 par11s 0f 11he Center pieee are provided ab their lower ends with bosses 48, semicireular in forma and coopera.11ing when fastened together 10 form 21 soeket 01 ehamber 49, in which the head 44 0f 11he insula.tsor is eonfined. The head-piece 40 is connected in 21 similar manner so the cen1er piece 45 by 11he insulator 50. The terminals a b are conneeted by a bridge 51, of insulating material, provided 2111 1'BS opposite ends wi'nh mehallie pieces 52, qonstilsuting auxiliary terminals, whieh eoperate wich the line-terminals a. 'b 10 prevents wearing awa.y 0f the latter by sparks whieh 1nay be forrned when the 11rolley-wheel leaves 11he 11enninal 52 and runs 012110 the bridge-pieee 51. The 2111xiliary terminals 52 may and preferably will be made as castings, eaeh having a nose-piece 54, (See Fig. 4,) Which extends in110 11he s1011- 11ed rea1 portion of 11he line-terminal. The auxiliary11erminals are provided with lugs er ears 55, which projeet mpwa.rd aud straddle a rearwa.rdly-extended projectlon 56 011 11he line-terminal, 11he said auxiliary terminals and the insulating-bar 01 bridge-piece being seeured 110 the line-terminals by co11ter-pins 01 other suiba.ble deviees 8,extended 11h1'011gh 11he said lugs and resting up0n 11he projection 56. (See Fig. 4.) The head-pieces 28 40 may also be separated by a bar 01' piece 60, of wood 01' ebher suimble insula11ing ma11erial, which extends 11h1011gh the eenter piece am]. 111110 suitable sockets 61 in the seid head-pieces and whieh may be engaged a1; ios opposi11e ends by the screws 62. The center pieee 45 may have revolubly seenred 110 it a. eross-bar 63, provided wi11h overturned lugs er e211s 64 for e11- gagement With 11he span er o11her support1ingwire 65. I1: will 11hus be seen ha11 11he lineterminals a b are duplieates andinterchangeable, thereby enabling all 11he 11ern1ina.ls 10 be made fr0m a Single pattern and also avoiding 11he necessit1y of earrying different sets 01 pat111erns et line-terminals. The elampingfinger 14 is made substantially curved 110 couform t0 the substantially curved f0rm 0f 11he groove in the terminal bhrough whieh the trolley-wire is extended, as represented in Fig. 4, and by such construetion an extended and firrn bearing 01 engagement 01 11he damping-finger wi11h the trolley-wire may be 0b- 11ained, 11hereby 11011 only enabling 11he trolleywire 110 be firmly seeured 110 the line-t1erminal, but also prevent1ing 01 redueing 10 a mininnu1n the I1endeney 0f the trolley-wire 110 crys- 11allize under 11he influenee of vibration a1: the poin11 0f fir1n support. In 011he1 w0rds, the bearing of 11he finger beyond the poin11 0f firn1 suppor, which in this case is 11he firs11 se1ew, aets 110 dis1ribute 11he vibration over a cousiderable lengt1h of 11he trolley-wire and avoids coneen 11ration 0f 11he vibra11ion 2111 one particular point.

111 will be observed by reference 110 Figs. 1 and 4 that1 11he under side of 11he secbion-insula11or is in a snbstan1sially straight line, whieh is substantially fiush with the under side of 11he trolley-wire. I11is 110 be obs erved, furt1her, 11h2111 the line-terminals when seeured 110 their head-pieees a1*e automatica.lly locked aga.insl1 disengagement by the strain placed upon the trolley-wire. These terminals ea.n be conneet1ed Wi11h and diseonneeted from the head-pieces in 21 substantially short 11ime, 111 being only neeessary 110 plaee the lugs 01 ears 24 in 1ine wi11h the recesses 31 and then pass seid lugs up into the said reeesses until 11hey elear the supporoing-flanges 30, after whieh 11he terminal is m0ved f0rwa.rd 01 in the direction indica.ted by the arr0w 80 until the 1ugs 24 pass wholly er partially 01111 0f line Wi11h the recesses 31 and ISll upon 11he flanges 30, 2111 whieh 11ime the lugs 25 are en11ered 111110 11he horizontal porti0n 0f the T-shaped slo11in the head-pieee and res11 upon 11he por11ion 013 11he flanges 30 a11 11he rear 0f 11he recesses 31. The llne-11erminal ma.y be moved forwa.rd 01 in the direet1ion indica11ed by the arrow 80 11n11i1 11he eross-bar 33 engages the rear por11i0n 0f 11he head-piece, whieh lat11er, a.s shown in Fig. 1, is provided wi11h a recess o1 n011ch 66 for 11he reeeption 0f said eross-bar, so 11hat the rear surfaee of the cross-bar 33 1nay be flush o1 substantia.lly fiush Wi11h the reansurfa.ee 0f the head-piece.

The insula11ing briclge-piece er bar 51 may be eonfined agains11 lateral rnovement by lugs 01' ears 67, (see Figs. 5 and 6,) one on each par11 or half 0f 11he eenter piece.

The cross-bar 63 is provided 2111 i11s center Wi11h a depending s11ud 90, provided wi11h a flange 01 head 91, whieh is adap11ed t0 be engaged by 11he inwardly-projeeting flanges 92 'n the dnplicate parts of the eenterpieee 45,

so as to firm1y seeure the eross-bar 63 to the eenter piece, yet permit; the cross-bar t0 be revolved freely in 0rder 130 enable 1't1 L0 be readily adjusted to Ehe supporoing span-wire.

By making the line-terminals detaehable from their head-pieees in Will be Seen that the main portion of Ehe section-insulaor xnay be secnred in plane to t-he span-wire and the trolley-wire ean be fastened t0 the line-termina1 on the construction-wagon, and after in has been finnly secured t0 the line-termi na1 the latter rnay then be readily eonnected Wibh the head-pieee 0f thesecLion-insulator, it; being only necessary, as above described, o0 pracbically hook the terminal onto the headpiece.

I prefer L0 use nhe center piece; but I do 11011 desire so 1in1ifi myself in this respecn, as Lhe section-insulator can be made without Ehe center pieee, in whieh ease Ehe headpieees are separated by a eontinuous insulahm.

I daim l. In an insulator ofthe dass deseribed, the eombinatsion wilzh line-terminals, of headpieees to which said line-terminals are deuachab1y siecured, a center pieee interposed between said head-pieees, insnlators conneet- Ing said Center piece With said head-pieces, a non-condneting piece interposed between said head-pieees and provided with anxiliary terminals coperating with said line-terminals, and means for seeuring said non-conducting piece in operative position, substantia1ly as described.

2. In aninsnlator of Lhe dass described, the eombinatai0n With line-tennihals, eaeh provided With an npwardly-inclined hollow portion, a finger 0x bar extended throngh said hollow portion and provided with means f01' retaining in in said hdlow portion, and a plurality of damping devices extended through said hollow portion and engaging said damping-finger, of head-pieees 130 which said linetermina1s are denachably secnred, a center piece between said head-pieces, insulators connecting said Center piece with said head- 7 pieees, and a non-condncting pieee 01 bar interposed between said line-terminals and provided Wibh auxiliary Terminals eoperafiing with said line-terminals, snbstanbially as described.

3. In an insnlatorof Ehe dass described, the eombination wit-h line-terminals provided Wihh slots ab thei1 rear end and With projecnions, of a non-conducting piece 01 bar provided ab its opposite ends With metallie pieces extended into Lhe slotted rear portions of said Iine-terminals, lngs 01' ears 0n said auxiliary terminals straddling er embradng Ehe projecoions on the line-Lerminals, and means for engaging said 1ngs 01' ears above the projections on ehe line-terminals, snbstantially as described.

4. In an insulator of the dass deseribed, the

combi1iatiori With a Iine-te'fmix1al provided with laterally-exended Iugs 01 ears, of a head-pieee provided on its under side with a substantially T-shaped slot, ohe bot/00m wa1ls of the horizontal part; 0f said s10t having notehes 01' reeesses through whioh Lhe Iugs 01' ears 011 the line-terminal are adapted 110 pass when said nerrnina1 is eonnected with 0x disconnected I"rom said head-pieee, substantially as described.

5. In an insulatorofthe dass described, the eombination with 1ine-terminals, 0f a center piece composed of duplicate part-s fibted togeuher, and means f0r seenring said parts nogether, and insulators eonnecting said center pieee with said line-terminals, snbstantially as described.

6. In an insulator 0f the dass described, the combination With line-terminals, of a center pieee composed oft dnplieate parts, nach having snbstantially semicircular bosses an its ends Whid1 eoperate o0 form chambers When said parts am fit;ted togetaher, means t0 seeure said parts togelaher, and insulators eonnecbing said line-ternninals and provided wilzh heads loeated wi'uhin the said ehambers, substantially as deseribed.

7. In an insulator of t he dass deseribed, the combinabion With a line4serminal comprising a snbstan'oially straighb rear porbion having laterally-extended lugs, of a head-piece having inturned fianges forming a substantially T-shaped slot, said flanges having nobehes 01 reeesses for the passage intso said slot 0f the laberally-extended lugs 0n said 1ine-terminal, substantially as described.

8. In an insnlator of he dass described, the eombination With a line-terminal provided wibh an upwardly-indined hollow portion having 1ngs 01 ears ab its rear end, of a dampjngfinger inserted into said hollow portion and provided ab its rear end with pins o1 projections ro engage said lngs 01' ears, and damping-serews inserted throi1gh the said hllow portion and adap'ed to engage the dampingfinger therein, snbstantially as described.

9. In aninsulator of Ehe dass described, the eombination Wil1h a line-terminal provided With an upwardly and rearwardly indined hollow portion through Which Lhe conductor is adapted to be passed, a damping-finger extended int0 said hollow porbion, means for retaining said finger in said hollow portion, and means f01 foreing said finger int0' engagement with said eondnctaor, substantially as descri'ned.

IIO

10. In an insulator of Ehe dass deseribed,the

eotnbination with a line-terminal provided with a snbstantially straight; rear portion having at; its upper edge 11w0 sets 0f laterally-extended lngs er ears separated frorn each obhe1, and 'provided with a cross-bar extended beyondsaid lngs 01' ears, of a head-piece provided ab its bottom with intnrned flanges forming a snbstantially T-shaped s1ot, said flanges having notehes 01' recesses for the pasrgo &

sage of one set of the laterally-extended lugs into the said T-shaped s1ot, substantially as described.

11. In an insulator of the dass deseribedthe combination With line terminals, of headpieces o which said line-terminals am detzachably secured, a center piece interposed between said head-pieces, and insulators nonnecting said Center piece wibh said headpieces, snbstantially as described.

12. In an insulatorof ohe dass described,the coxnbinabion with a line-terminal, 0f a headpiece for supporting said terminal, one of said parts having laterally-extended 1ugs 0r ears, and the other of said parts having a slot for the reception of said 1ugs or eats and provided witah flanges whieh engage said lugs 01' ears by longitudinal movement of one part with relation 130 the daher, substantially'as described.

13. In an insulator 0f the dass deseribedtshe eombination with a line-nerminal, 0f a headpiece or Support '00 which said line-terminal is adapted to be secured, and interlocking rneans on said terminal and head-pieeeadapted 110 be engaged with and disengaged from eaoh o'uher by movement 0f one part with relation 110 Ehe other, substantially as described.

14:. In an insulator of the dass deseribed,the combinaion with a center pieee composed 0E separate parts having inwardlyextended flanges,of a cross-bar provided with a depending stud having a head 0r flange, and means for securing togeoher the parts 0f the cener piece with their inwardly-extended flanges in engagement; witah the head on the cross-bar, substantsially as described.

15. The combinataion witsh a line-terminal provided with a slob, groove 01 ehanne1, of a eonduotor 01 wire extended into said s0, groove 01 channe], a damping deviee having an extended engagernent; with said condnetor, and means in engagement with the damping device intermediaue of ios ends to force said damping deviee int0 firm engagementz with the conduetor or wire between Ehe ends of the said datnping device, substaantially as and for the purpose specified.

In testimony whereof I have signed my name 130 this specifieabion in Ehe pressence of two subseribing witnesses.

JOHAN M. ANDERSEN.

Witnesses:

J AS. H. CHURCHILL, J. MURPHY. 

